This plug-in was inspired by the extJS border-layout, and recreates that functionality as a jQuery plug-in. The UI Layout plug-in can create any UI look you want - from simple headers or sidebars, to a complex application with toolbars, menus, help-panels, status bars, sub-forms, etc.
This plug-in...
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Dirty Forms will alert a user when they attempt to leave a page without submitting a form they have entered data into. It alerts them in a modal popup box, and also falls back to the browser's default onBeforeUnload handler for events outside the scope of the document such as, but not limited to,...
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With Interaction Lib you can wire up most common ajax UI interactions with as few as 2 - 3 attributes right in your markup with no additional javascript. Also provides markup for wiring and configuring other jQuery/jQueryUI plugins. Provides support for unobtrusive configurations.